Which statement best defines multicellularity in eukaryotic organisms?

• A. Multicellularity refers to organisms that reproduce through binary fission.
• B. Multicellularity refers to organisms composed of multiple cells that work together, each with specialized functions.
• C. Multicellularity refers to organisms that have a single cell with multiple nuclei.
• D. Multicellularity refers to organisms that can survive independently without any cellular specialization.

Answer: (B)

Verified step by step guidance

1. Understand the concept of multicellularity: Multicellularity in eukaryotic organisms refers to the condition where an organism is composed of multiple cells that work together, each with specialized functions.
2. Recognize the importance of cellular specialization: In multicellular organisms, different cells have specialized roles, such as muscle cells for movement, nerve cells for signaling, and blood cells for transport.
3. Distinguish multicellularity from other forms of cellular organization: Unlike unicellular organisms, which consist of a single cell, multicellular organisms have many cells that coordinate to perform complex functions.
4. Consider the evolutionary advantage: Multicellularity allows for greater complexity and adaptability, enabling organisms to occupy diverse ecological niches.
5. Identify the incorrect statements: Multicellularity does not refer to binary fission, single cells with multiple nuclei, or organisms surviving independently without specialization.